package com.cloudfast.httpclient.service;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;

import org.apache.http.NameValuePair;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.utils.URIBuilder;
import org.apache.http.conn.ssl.NoopHostnameVerifier;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.conn.ssl.TrustSelfSignedStrategy;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.ssl.SSLContexts;
import org.apache.http.util.EntityUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.cloudfast.httpclient.HttpResult;

@Service
public class HttpClientApiService {
    private static final Logger logger = LoggerFactory.getLogger(Logger.class);

    @Autowired
    private CloseableHttpClient httpClient;

    @Autowired
    private RequestConfig config;

    /**
     * 不带参数的get请求，如果状态码为200，则返回body，如果不为200，则返回null
     *
     * @param url
     * @return
     * @throws Exception
     */
    public String doGet(String url) throws Exception {
        // 声明 http get 请求
        HttpGet httpGet = new HttpGet(url);

        // 装载配置信息
        httpGet.setConfig(config);

        // 发起请求
        CloseableHttpResponse response = this.httpClient.execute(httpGet);

        // 判断状态码是否为200
        if (response.getStatusLine().getStatusCode() == 200) {
            // 返回响应体的内容
            return EntityUtils.toString(response.getEntity(), "UTF-8");
        }
        return null;
    }

    /**
     * 带参数的get请求，如果状态码为200，则返回body，如果不为200，则返回null
     *
     * @param url
     * @return
     * @throws Exception
     */
    public String doGet(String url, Map<String, Object> map) throws Exception {
        URIBuilder uriBuilder = new URIBuilder(url);

        if (map != null) {
            // 遍历map,拼接请求参数
            for (Map.Entry<String, Object> entry : map.entrySet()) {
                uriBuilder.setParameter(entry.getKey(), entry.getValue().toString());
            }
        }

        // 调用不带参数的get请求
        return this.doGet(uriBuilder.build().toString());

    }

    /**
     * 带参数的post请求
     *
     * @param url
     * @param map
     * @return
     * @throws Exception
     */
    public HttpResult doPost(String url, Map<String, Object> map) throws Exception {
        // 声明httpPost请求
        HttpPost httpPost = new HttpPost(url);
        // 加入配置信息
        httpPost.setConfig(config);
        // 判断map是否为空，不为空则进行遍历，封装from表单对象
        if (map != null) {
            List<NameValuePair> list = new ArrayList<NameValuePair>();
            for (Map.Entry<String, Object> entry : map.entrySet()) {
                list.add(new BasicNameValuePair(entry.getKey(), entry.getValue().toString()));
            }
            // 构造from表单对象
            UrlEncodedFormEntity urlEncodedFormEntity = new UrlEncodedFormEntity(list, "UTF-8");

            // 把表单放到post里
            httpPost.setEntity(urlEncodedFormEntity);
        }

        // 发起请求
        CloseableHttpResponse response = this.httpClient.execute(httpPost);
        return new HttpResult(response.getStatusLine().getStatusCode(),
                EntityUtils.toString(response.getEntity(), "UTF-8"));
    }

    /**
     * 添加header的请求
     *
     * @param url
     * @param map
     * @param headers
     * @return
     * @throws Exception
     */
    public HttpResult doPost(String url, Map<String, Object> map, Map<String, Object> headers) throws Exception {
        // 声明httpPost请求
        HttpPost httpPost = new HttpPost(url);
        // 加入配置信息
        httpPost.setConfig(config);
        // 判断map是否为空，不为空则进行遍历，封装from表单对象
        if (map != null) {
            List<NameValuePair> list = new ArrayList<NameValuePair>();
            for (Map.Entry<String, Object> entry : map.entrySet()) {
                list.add(new BasicNameValuePair(entry.getKey(), entry.getValue().toString()));
            }
            for (Map.Entry<String, Object> entry : headers.entrySet()) {
                httpPost.addHeader(entry.getKey(), entry.getValue().toString());
            }
            // 构造from表单对象
            UrlEncodedFormEntity urlEncodedFormEntity = new UrlEncodedFormEntity(list, "UTF-8");

            // 把表单放到post里
            httpPost.setEntity(urlEncodedFormEntity);
        }

        // 发起请求
        CloseableHttpResponse response = this.httpClient.execute(httpPost);
        return new HttpResult(response.getStatusLine().getStatusCode(),
                EntityUtils.toString(response.getEntity(), "UTF-8"));
    }

    /**
     * 不带参数post请求
     *
     * @param url
     * @return
     * @throws Exception
     */
    public HttpResult doPost(String url) throws Exception {
        return this.doPost(url, null);
    }

    /**
     * 发送json格式数据
     *
     * @param url
     * @param json
     * @return
     */
    public String doPostJson(String url, String json) {
        // 创建Httpclient对象
        CloseableHttpClient httpClient = null;
        CloseableHttpResponse response = null;
        String resultString = "";
        try {
            if(url.startsWith("https")){
                SSLConnectionSocketFactory scsf = new SSLConnectionSocketFactory(
                        SSLContexts.custom().loadTrustMaterial(null, new TrustSelfSignedStrategy()).build(),
                        NoopHostnameVerifier.INSTANCE);
                httpClient = HttpClients.custom().setSSLSocketFactory(scsf).build();
            }else{
                httpClient=HttpClients.createDefault();
            }
            // 创建Http Post请求
            HttpPost httpPost = new HttpPost(url);
            // 创建请求内容
            StringEntity entity = new StringEntity(json, ContentType.APPLICATION_JSON);
            httpPost.setEntity(entity);
            // 执行http请求
            response = httpClient.execute(httpPost);
            resultString = EntityUtils.toString(response.getEntity(), "utf-8");
        } catch (Exception e) {
            logger.error(e.getMessage());
        } finally {
            try {
                response.close();
            } catch (Exception e) {
                logger.error(e.getMessage());
            }
        }
        return resultString;
    }

    /**
     * 添加headers的请求
     *
     * @param url
     * @param json
     * @param headers
     * @return
     */
    public String doPostJson(String url, String json, Map<String, Object> headers) {
        // 创建Httpclient对象
        CloseableHttpClient httpClient = null;
        CloseableHttpResponse response = null;
        String resultString = "";
        try {
            if(url.startsWith("https")){
                SSLConnectionSocketFactory scsf = new SSLConnectionSocketFactory(
                        SSLContexts.custom().loadTrustMaterial(null, new TrustSelfSignedStrategy()).build(),
                        NoopHostnameVerifier.INSTANCE);
                httpClient = HttpClients.custom().setSSLSocketFactory(scsf).build();
            }else{
                httpClient=HttpClients.createDefault();
            }
            // 创建Http Post请求
            HttpPost httpPost = new HttpPost(url);
            for (Map.Entry<String, Object> entry : headers.entrySet()) {
                httpPost.addHeader(entry.getKey(), entry.getValue().toString());
            }
            // 创建请求内容
            StringEntity entity = new StringEntity(json, ContentType.APPLICATION_JSON);
            httpPost.setEntity(entity);
            // 执行http请求
            response = httpClient.execute(httpPost);
            resultString = EntityUtils.toString(response.getEntity(), "utf-8");
        } catch (Exception e) {
            logger.error(e.getMessage());
        } finally {
            try {
                response.close();
            } catch (Exception e) {
                logger.error(e.getMessage());
            }
        }
        return resultString;
    }
}